National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Monticello, Sullivan County International Airport (KMSV)

Lat: 41.7°NLon: 74.8°WElev: 1404ft.

Fair

60°F

16°C

Humidity 53%
Wind Speed NW 8 mph
Barometer 30.23 in (1023.8 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 21 May 5:56 pm EDT
Extended Forecast for

2 Miles SW Grant Mills NY

Frost Advisory May 21, 11:00pm until May 22, 08:00am
Click here for hazard details and duration
Frost Advisory

  • Tonight

    Tonight: Cloudy, then gradually becoming partly cloudy, with a low around 38. North wind around 5 mph becoming calm in the evening.

    Low: 38 °F

    Decreasing
    Clouds

  • Friday

    Friday: Partly sunny, with a high near 64. East wind around 5 mph.

    High: 64 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 41. Light southeast wind.

    Low: 41 °F

    Mostly Cloudy

  • Saturday

    Saturday: Showers. High near 50. Southeast wind 7 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 50 °F

    Showers

  • Saturday Night

    Saturday Night: Showers. Low around 38. Southeast wind around 11 mph, with gusts as high as 24 mph. Chance of precipitation is 100%.

    Low: 38 °F

    Showers

  • Sunday

    Sunday: Showers, mainly before 2pm. High near 55. Chance of precipitation is 80%.

    High: 55 °F

    Showers

  • Sunday Night

    Sunday Night: A chance of showers after 2am. Cloudy, with a low around 46. Chance of precipitation is 40%.

    Low: 46 °F

    Cloudy then
    Chance
    Showers

  • Memorial Day

    Memorial Day: A chance of showers. Mostly cloudy, with a high near 66. Chance of precipitation is 40%.

    High: 66 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 49.

    Low: 49 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Cloudy, then gradually becoming partly cloudy, with a low around 38. North wind around 5 mph becoming calm in the evening.
Friday
Partly sunny, with a high near 64. East wind around 5 mph.
Friday Night
Mostly cloudy, with a low around 41. Light southeast wind.
Saturday
Showers. High near 50. Southeast wind 7 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
Showers. Low around 38. Southeast wind around 11 mph, with gusts as high as 24 mph. Chance of precipitation is 100%.
Sunday
Showers, mainly before 2pm. High near 55. Chance of precipitation is 80%.
Sunday Night
A chance of showers after 2am. Cloudy, with a low around 46. Chance of precipitation is 40%.
Memorial Day
A chance of showers. Mostly cloudy, with a high near 66. Chance of precipitation is 40%.
Monday Night
Mostly cloudy, with a low around 49.
Tuesday
Partly sunny, with a high near 75.
Tuesday Night
Partly cloudy, with a low around 51.
Wednesday
Mostly sunny, with a high near 74.
Wednesday Night
Partly cloudy, with a low around 49.
Thursday
Mostly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Grant Mills NY
 42.06°N 74.71°W (Elev. 2201 ft)
Last Update:
6:08 pm EDT May 21, 2026
Forecast Valid:
6pm EDT May 21, 2026-6pm EDT May 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation